@mosgaard (edit: not as simple as I thought) if it's just meters, you could connect them to your output's monitors, if your output has monitors and you're not playing anything else at the same time
@jmorahan good idea putting meters on the monitor.
I just checked out Easy Effects and if it could do VST3s, that would be awesome. Seems the difference between Easy Effects and Carla, is that Easy Effects creates a dedicated sink, which keeps the connection to ex. the music app, even if a number is changed.
If I route from the music app to Carla (or Bitwig/Ardour), it loses the connection when a new track starts playing.
I have to look more into this. It's interesting.